‘Sorry, you can not use our hospital car park, it is closed for repair’.
Is that the sentence needing to be fixed
Is like what Sean Roberts said: That the government is made up of three branches, which are made to see each other to make sure no branch is dominating the other two. They are all the time trying to find a balance among the three branches (Judicial, Executive, and Legislative). The founders created this in order to have an effective government in decision making.
Also, Gridlock is when something isn't moving. You can also call it a stalemate. The government is meant to have gridlock. For example, it can take a WHILE, a few years, for a decision to be made on a certain issue, and when it has to do with something controversial it takes longer (like abortion, which still, to this day, is a heated topic in politics), which makes people complain about how "slow" the American government is when making decisions.
Hope this helps.
His/her
Since the sentence begins by clarifying that it is "each" lawyer's car that has to be parked, the pronoun has to be singular to agree with 'each'. If it were "all lawyers", then the pronoun could be 'their' since that would be agreement in the plural consistency of the sentence.